1988-04-18_PERMIT FILE - C1981008A

• Permit No: C1981008A
• IBM Index Class Name: PERMIT FILE
• Doc Date: 4/18/1988
• Doc Name: Design Report Sedimentation Structure
• Section_Exhibit Name: Tab 13 Attachment B
• Media Type: D
• Archive: Yes

TABLE OF CONTENTS
Page
Introduction . . . . . . . . . . . . . . . . . . . . . . . 1
Inspection . . . . . . . . . . . . . . . . . . . . . . . 1
Site Description . . . . . . . . . . . . . . . . . . . . . 1
LandUse . . . . . . . . . . . . . . . . . . . . . . . . 1
Embankment . . . . . . . . . . . . . . . . . . . . . . 1
Design Analysis. . . . . . . . . . . . . . . . . . . . . . 1
General . . . . . . . . . . . . . . . . . . . . . . . . 1
Hydrology . . . . . . . . . . . . . . . . . . . . . . . 1
SCS Curve Numbers . . . . . . . . . . . . . . . . . . 3
Precipitation and Storm Type . . . . . . . . . . . . 4
Unit Hydrograph and Surface Condition . . . . . . . . 4
Travel Time . . . . . . . . . . . . . . . . . . . . 4
Time of Concentration . . . . . . . . . . . . . . . . 4
Sedimentology . . . . . . . . . . . . . . . . . . . . . 6
Soil Erodibility Factors (K) . . . . . . . . . . . . 6
Length - Slope Factors (L,S) . . . . . . . . . . . . 7
Control Practice Factor (CP) . . . . . . . . . . . . 7
Particle Size Distributions . . . . . . . . . . . . 7
Storage Capacity . . . . . . . . . . . . . . . . . . . . 7
Spillway . . . . . . . . . . . . . . . . . . . . . . . . 8
Remedial Compliance Plan . . . . . . . . . . . . . . . . . 9
Selected References. . . . . . . . . . . . . . . . . . . . 11
Addendum A - 10-year, 24-hour SEDIMOT II (Input and Output)
Addendum B - 25-year, 24-hour SEDIMOT II (Input and Output)
Appendix 1 - As-Built Certification Sedimentation Pond 001